L920 weighs 185g
808 Pureview weighs 169g, so it is 16g lighter than L920.
The mechanical OIS and wireless charging are probably adding some weight to L920. If they can find ways to reduce the weight to around 160g, people won't consider it an issue.
I would like to see a Quad-Core (S4 Pro?) Pureview phone with similar specs as the 808 Pureview (41 mp sensor or a new 24 mp smaller sensor) as a follow up version of L920 in the near future. L940? I don't mind it is slightly thicker if they can throw in a microSD slot.
I am sure your weight comparison is correct. The 808 is a much smaller phone with a 4" screen, but my point wasn't for a weight comparison between the the 920 and the 808. My point was there a lot of threads in this forum where people are making their phone decisions on weight, where people think 20g is a "
MASSIVE" weight difference. I am use to using older Palm phones with extended life (3400mah) batteries, so a 20g difference in weight means nothing to me and wouldn't determine what phone I would buy.
I think you're on the right track. I think a smaller 16 to 24MP PureView will be out in the near future.