Saint carries more games, but also derps some games away, Oddone is more consistent. But, right now, Saint has an edge on him overall. It's gone back and forth at times, Oddone used to be hands down the best NA jungler, but he seems to just get into a comfort zone more often, never making any big plays.
When *I* say smite wars, I just mean timing smite to secure any objective, not just baron. On baron it's more luck then anything, but dragon/red/blue, he too often mistimes it and lets someone else steal the objective, not just the enemy jungler with smite but even just normal abilities because he used smite slightly too early.
That's secondary to being a good jungler though, knowing where and when to show up before hand is more important. Ganking/counterganking at the right times, seeing a wave is going to need to be cleared to hold that tower after someone had to leave lane, etc.. there's all kinds of other things that make a good jungler. Saint is a more aggressive ganker and counter jungler than Oddone and often makes something happen for his team that gives them a clear advantage, but when those plays go wrong they sometimes lose the game as well.
InSec and Lilballz are both very good, but I think there's another one as well, cloudtemplar maybe? Point is, there's at least 3 other junglers in the world, probably 5+, better than Saint or Oddone. Same could be said about almost any other role too.