Well the way I see it, if at 10 Damian is performing at a level that he's able to compete with any of the other Robins [who are 17, 20+ and 20+ ] then clearly he out classes all of them. If Damian achievements are comparable at 10 to Tim's at 17 then there is no question who is smarter or excel.
Tim at 10 wasn't anywhere near where Damian was at 10 so it invalidates any comparison while also undermining Tim's own achievements.
Likewise Comparing Tim a 17 to Bruce a 30+ year old doesn't make Bruce look very well if Tim is performing a on a similar level to Bruce.
Which he [Tim] isn't. The problem is that that is not the case with Damian.
Damian's hyper-competency at a young age is the problem.