flaps/slats wet V1 speed

[flyin74]

I was out flying with some friends and was asked, "what do you think creates more lift, flaps or leading edge slats?" I responded quickly with flaps, just because of the camber created by flaps.
What do you all think creates more lift?

Also, how does a wet V1 speed effect weight, performance, etc.?
I told him that the V1 speed would be lower and your weight would be limited and finally your obstacle clearance would be degraded from 35ft to 15ft.
Does this sound right?

Thanks in advance!