Halo 4 is a great game but 343 have not delivered on the competitive side . Skill gap is very minimal in halo 4 and here is why:

.Even in the slayer pro playlist there are still classes
.No arena style maps
.Forge maps not large or open spaced enough to create good arena style maps
.Items in forge look like there from adrift and adrift is the most disgusting map ever
.343 have patched a button combo that allowed grenades to be thrown at higher velocity this glitch just increased skill gap and made the game more tactical it was great for competitive play also anyone could do it so it was not unfair removing this glitch shows just how much 343 care about there truest fans
.the only map that is close to a arena style is haven but haven has way to many lines of sight


although these things are minor and it seems like I`m a whining bitch these things are very important when it comes to competitive play