Gear > Skill in some situations....skill > gear in others, there is no hard and fast rule.

My friends and i can do UD in 29min with baron down, in aq/zg gear, while some ppl in T2 still cant do it, so skill > gear

My guild hit a roadblock at ossirian, while we were still in zg/aq gear, wiped 10-15times, as we couldnt keep our MT alive....so we started on MC, when our MT's and OT's had about 3-4 T1 we went back and wtfpwned ossirain with the same team....with no deaths, so gear > skill