I don’t think it’s too small. Looking at seat angles on both bike It seems as if there’s a fit issue, both seats are probably too high.
ive never been a fan of trying to make a bike into something it isn’t. 916 has full racing geometry..... you can do whatever to the bars/stem but at the end of the day it’s still a racing bike.
tip: set your seat heat
1. Level seat. Place a straight on seat and level it
2. Take your shoes off
3. Hop on bike and hold yourself up
4. Place bare heel on center of pedal and pedal backwards
raise/lower seat until you heel just barely makes contact with pedal.
5. Do NOT rock your hips.
6. With shoes on and ball of foot over center of pedal you’ll proper knee bend. Or it’ll be very very close.