That question is probably best asked on american avs site. What I've read is it's better than XPA series.
Reason why I went for ATI is multiple amp channel configuration, choose from 2,3,4,5,6,7. Also wanted a step up from multiple Audiolab 2 channel amps, I didn't want a multi-channel amp that would be a downgrade (ie Audiolab X7)
ATI make Outlaws 200W XLR model amp, also for Lexicon RZ-7 is ATI 3007, a few other brands I believe are made by ATI. Also the ATI is fully balanced, the Emotiva XPA aren't. Also Emotiva lacks a XPA-4, so for myself a 3+4, rather than just a 7. Since I listen to a bit of music I didn't want the remaning amps on for hours at a time. Also the 3 channel runs cooler than the 7, the 1807 got pretty hot even though I wasn't driving it that hard. 3 channel runs cool.
Also for Emotiva that means buying from the states- import tax, duty etc, and cost returning it.
Not saying my experience with ATI and lsound is perfect, but at least it's closer, no vat, and it was sent back (bit of arguing about that with retailer though)