They definitely do! And Marco is fully on board Bean and Ender's 'end things decisively' train. Like fuck yeah, pragmatism! They also both use their intelligence in creative ways. And of course they both play support in their teams and most of their contributions are tactical while physically they're like... the least intimidating things ever.

(LOL I feel like Marco in the Enderverse would be the kid that throws the tests when he's little).

It would. Marco has no problem learning from a 10-year old, if the 10-year old knows more.