I lift, I'm an enduro(wanna be anyway), I suck at climbing hills in comparison to fast 1/2's.
I know others who lift, who can climb better than I.
Being a proficient enduro/crit rider/climber is not easy for most. They are out there, but what that usually means is that they are just way better at racing bikes than everyone else across the board. When I speak of being a good climber, I mean being able to attack a P12 field. I thought I was a decent climber all the way through the 3's, after that I learned that climbing would never be a strong suit for me. My off season plan includes a decent amount of gym work, but this in on top of a lot of base and prescribed by a coach who knows me very well and has a vision in mind so take that for what it's worth.