Definitely buckets.
If the spot has evened things up perfectly, then big pockets favor the weaker shotmaker. Big pockets don't make it any easier to sink the everyday simple shots that come up when you're in line, they favor making the testers. The weaker player will probably be faced with more testers (cuz he's got worse position play). The pro will be spending most of his time in line, where it doesn't matter having an extra inch of leeway.
If the spot has evened things up perfectly, then big pockets favor the weaker shotmaker. Big pockets don't make it any easier to sink the everyday simple shots that come up when you're in line, they favor making the testers. The weaker player will probably be faced with more testers (cuz he's got worse position play). The pro will be spending most of his time in line, where it doesn't matter having an extra inch of leeway.