The fundamental questions are these:
Why is MS releasing Android and iOS apps on a different schedule than WP? Why is WP often trailing? And what does this say about MS' commitment to WP and its future?
Particularly that last question makes this an emotional topic, because without MS' full support, WP won't be going any farther, pretty much guaranteeing it a place in the hall of irrelevant technologies.
I'm just not convinced we really know what MS is thinking or planning or prioritizing in this regard.
For example, it's fine to prioritize Android and iOS as a means to protect and promote Office, OneDrive, and MS' other franchises. That is also vital to WP's survival. If MS can't postpone those efforts and requires them to achieve a dominant position on all mobile platforms NOW, just to ensure they remain relevant, then we should all be happy that is what MS is doing and be more than willing to accept a delay on WP's end for that to get done. If MS has however decided that WP is unlikely to ever provide them with a competitive advantage, and they have now decided that their services will be the offerings doing the competing, while their mobile platforms become nothing more than minor "players" in MS' schedules, then that is an entirely different situation. One situation I'd be fine with, the other would make me want to start looking elsewhere. I'm not even convinced MS is intentionally prioritizing anything at all. I think it's very well possible that Office for WP is on a different schedule only because they want to develop a single version of touch-office for both tablets and phones, which would necessitate that W10 mobile has sufficiently progressed towards completion. If W10 mobile wasn't ready, then why not allow the Office division to work on the iOS and Android versions in the mean time? Coincidentally, W10 mobile probably would be reaching the point where one could start developing for it around now, so iOS/Android versions releasing around now would make perfect sense in that way too. It would also eventually provide us with the best version of mobile Office bare none, just not right now. How comprehensive Office on WP ends up being, will be very telling.
The point of all this: just the fact that Office for WP is on a different schedule means nothing. The real question is why! I'm not sure if we can really be so sure about why... maybe MS has decided iOS and Android are mire important. Maybe it's just technical realities. Maybe it's something else entirely...