I disagree, and it does make it a non-flagship phone. When other devices do have a feature (I am not talking about android or iPhone) rather other Windows phones, and this phone doesn't. It makes it a lesser device. The 920 when launched was a superior device. It has more features than the 925. In every generation of devices, the phone with the most features, and best specs will be the flagship. All Windows phone 7 launch devices were flagship Windows devices and showed the versatility of the platform. So yes the Dell venue pro was a Windows phone 7 flagship (2010)
The only thing the 925 lacked over the 920 was the storage(16 GB less) and wireless charging. Those two features did not make it any less of a flagship considering the fact that most people acknowledge the 925 to be the better design(and more premium) of the two devices. I believe Daniel Rubino even said they need to make another 925 model for Windows 10...not a 920.
The 925 also had 6 lenses to the 920s 5......doesn't make the 920 any less of a device because its camera wasn't 100 percent identical the 920s.
You have to also realize that when the 920 came out...it wasn't meant to be the flagship since it was essentially a repackaged Lumia 920. Apple did the same exact thing with the IPhone 5C which is essentially the IPhone 5 with a different look.
The actual flagship at the time of the 925's release WAS the 1020....the 920 was old news and the 925 was a REFRESH to the 920 to continue that line of products. If you want to be technical, the 925 I guess was also a flagship as well because the 1020 and 925 were essentially the same exact phones aside from the camera anyway.
Then came the 1520 in November.
So Generation 1 of the Windows Phone 8 era....showcased the 920.
Generation 2 of the windows Phone 8 era....showcased the 1020 and 925
and Generation 3(3.5)- Then found us with the 1520 and 930/Icon
Each generation showcased the best Lumia phones at the time.
You really can't compare a Windows Phone 7 era to the WIndows Phone 8 era considering EVERY...single...Windows phone was exactly the same. There was no versatility. Same exact specs basically. Same restrictions. It's really no wonder that WP7 didn't do well. The only unique Windows phone 7 device that truly stood out was the 800, 900 since they were nokia's first and the dell venue pro only because it was the only windows phone ever with that design.
WP8 showcased different featuresets...be it HTC's 8X with their beats(and later their repackaged Android phones) for the music people
Samsung's ATIV line for the media savvy people with the Amoled Screens
And the many variations of Lumias....the first phablet(1520), Industry leading Camera(1020), and then the hero of the platform(520) which also introduced many of the budget handsets we've seen today that have kept the platform afloat and relevant to an extent.