Here's my answers to Lee's 'why'

Answer 1: Conflicting Strategies.
Not to go to indepth, but here's a quick one:
A Two Goal Grabber Picking A Two Goal Grabber? Not likely
A Ball Gather picking a Ball gatherer? Maybe, but if your bot is so good wouldn't you want it to go twice? and wouldn't you probably want a two goal grabber at that? one that could easily lock down two goals to score the balls in (just like 230's robot). Also Being a seeded ball gatherer being picked by a higher seeded ball gather: if you've ranked this high on your own, don't you think you have a shot at beating them? Possibly. But what was the strategy you had in mind as you walked up to the field to wait your turn? does this change it? most likely.

Answer 2: The Number one Seeded Team does not have the Number One bot

Not in every regional has the number one seeded team been the best bot out there. That goes for some of the other seeded teams too. Though there have been maybe 2 ball bots at the top, the number 3 team could have been a team that just happened to be in high scoring matches and only has an average robot.

I wouldn't hands down let that third seeded team pick our team. I don't think:
Since they were seeded ahead of us, they must be a better team.
I think:
Hmm their strategy conflicts with ours and/or our robot is better and/or we could make a better alliance picking other teams.

So in playing against them I'd feel we could defeat them. Hehe -- if they aren't good enough to play with us, they certaintly aren't good enough to beat us ;-)