Who wins?
Stacking +2s vs Stacking a +4 on a +2
Stacking +2s wins 76% to 24%. 65 more put them in the same row. From Board Game Rule Debates Tier List. Pick a side.
luis.s1857 on Stacking +2s: it's how the game is actually played, I don't care what the box says
retired_pickle on Stacking a +4 on a +2: if you allow stacking, color doesn't matter
Board Game Rule Debates Tier List: the full ranking