I don't think Bartolo Colon is going to slow down any time soon. All his peripherals are solid.
But anyone who thinks Freddy Garcia (4.12 xFIP), Burnett (5.95 ERA post-ASG last year and 4.83 ERA post-ASG this year) and Phil Hughes (no explanation needed) are better than anyone else's 3, 4 and 5 starters needs to put their pom poms back in their closet.