Hi Mika,
I see the issue with ES-LSE. I find a TK Boeing 737. Lately we've been experiencing a bug during screening, where photos and info suddenly get mixed up. Unfortunately we haven't been able to find the bug yet. I've submitted a correction for that particular photo now.
As for the "-800 vs. -8AS" example, please read this thread first:
viewtopic.php?f=7&t=1353727. So depending on which Ryanair registration you viewed, those 10 are correct and the first photo has the wrong info.
Data integrity is very important and I spend a good amount of my 'A.net dedicated' time correcting info for example. If you see someonething that's incorrect, please alert the editors via E-mail or submit a correction yourself.