No the camera on the Lumia 900 is the same as the Lumia 800 and N9. It is very weak and all the reviews say it is disappointing compared to Nokia's past as well as compared to the competition (Samsung Galaxy S II, HTC Amaze, etc.) The sample shots have already proven the 16mp camera on the Titan 2 is better than the Titan 1, which is itself better than the N9/Lumia 800/Lumia 900. This point is not debatable. I thought there was gonna be a 12mp variant of the Lumia 900, but apparently that was just a false rumor.
Nokia's camera exec Damian Dinning did mention earlier on that 900 camera software was totally reworked. Results we have seen so far have looked very good. I would wait reviews before saying anything about the camera.
Some Titan 2 examples:
HTC Titan II live photos and camera samples - see the 16 megapixel monster in action - GSMArena Blog
Some Nokia Lumia 900 examples:
Some great shots taken by the Nokia Lumia 900 camera | WMPoweruser
There are also reviews of the Nokia Drive and related apps. They are easily replaceable with current WP offerings.
I very much doubt any manufacturer other than Google and Nokia can offer what they have on maps. Thinking Nokia owns world second largest mapping company that others buy the mapping services (Like Microsoft), reason why they are able to offer the services for free.
Nokia is the only one to offer totally free voice guidance, global offline maps that you can download to your phone at any point without the need of data use, real time traffic updates. Nokia again entered to Windows Phones just recently and there's a lot of new servives and services from Symbian they are sure to bring. They have already brought quite a bit after 800 launched just 5-6 months ago.
I've owned four Samsung AMOLED phones. I find the SuperLCD panel (also made by Samsung, go figure) compared to AMOLED to be the difference between night and day. The Nokia 900 will have an AMOLED panel and seems to exhibit the same issues, and is probably made by Samsung as well. The AMOLED is more popping, but the colors are awful and gaudy and the blue whites make me nauseus when viewing websites. Colors are completely crushed and there's a ton of color banding. Sometimes I wonder if the display can only handle 256 colors because everything looks the same color, with no shades or subtle gradients. Turning down the brightness makes things worse. AMOLED does not look good at <50% brightness. The contrast drops off significantly compared to LCD. The imperfections in the manufacturing process also rear there head at lower brightness, with visible lines on solid backgrounds. Another thing about AMOLEDs is that it is far sharper and more pixellated looking. Text looks "hairier" to me and not smooth or well aliased. Ditto for round objects and curves of any kind. Things are far more smooth and natural on LCDs in general. The SuperLCD panel on the Titan has IPS-like viewing angles, deep blacks, and is punchy without being gaudy or having a weird color temperature. I thought I would be disappointed since it was not an IPS display and I've been a big fan of IPS displays since...forever...but it actually does not have that "glow" or neon look in some of its whites like the iPhone 4 has, so I find the SUperLCD on the Titan even better. SuperLCD is a pretty generic term though, so they are not all created equal, especially not among HTC phones
Screen on Lumia 900 is non pentile AMOLED, that would be equivalent to Samsung S AMOLED plus. What the Nokia Clear Black display actually means is that there's layer of polarizing filter that brings out even deeper blacks and neutralizes glare and so improves visibility of the screen out on the sun.
Samsung's S AMOLED removed layer from the screen, so they are not the same tech. Clear Black Display can actually even be used on LCD screens, like on Lumia 710. Lumia 800 at least looks damn awesome imo. Engadget. The Verge etc have all been praising Nokia's Clear Black displays.
The biggest problem with the Super-LCD display is usage under direct sun rays. Unless it’s on the highest brightness settings (80% to 100%), the screen appears simply washed out and is barely readable. Even on the 100% setting, it remains slightly washed out. This hampers the device usage for taking pictures in bright environments or reading messages, or basically doing any interaction with your device that requires you looking at the screen.
The CBD however, although based on AMOLED technologies that are normally less performing in direct sun, is a great improvement over them. It works beautifully under sun rays and remains visible even on lower brightness settings, making it a great option to have in sunny countries. Taking pictures, reading texts, using your device: everything is doable with ease, as if the sun just wasn’t there.
Screens: Super LCD vs AMOLED Clear Black Display
Article is year old and shows the first versions of SLCD and Nokia's Clear Black Displays.
Other than that i would mostly agree with you. I think especially that Lumia 900 could have been lighter. I do myself prefer Lumia 900 moslty because of the design and i think the support will be much better on Nokia's side.