The Revel has the surface area of a 14" woofer, the KEF has the surface area of an 18" woofer, and the Status 8T has the surface are of a 17.4" woofer.
Add to that the fact that the Revel and KEF's woofers are more than capable of playing VERY loudly with minimal exertion (since there are so many) it's not bass that's going to be gained here. If i added another 27 woofers..but listened at the same volume...I'd still be in the same place (as far as feeling the bass not distortion). The problem with one 8" (Philharmonic) is it has to work VERY hard and therefore SPL is limited. None of the speakers being discussed right now have that issue. They are more than capable of playing VERY loudly, moving LOTS of air, allowing you to seriously feel the bass.
If anything, the KEF wins in the bass department. 4 9" high power handling woofers. More surface area AND less (probably not a whole lot less...I'm not sure) distortion.