It depends on the mix as well as the type of instruments in the track. For instance, I can have a track that focuses on drums, bass guitars and other FX that are low frequencies centric so treble is not an important factor in affecting the soundstage.
Normally, instruments like xylophones, tambourines are hard panned to either side since high frequencies are easier to be picked up by our ears. Also, ambiance in live music will lose the size of its perceived space if the treble is shelved.
Don't get me wrong, I am not saying that the soundstage and imaging on the C4 is bad. I am saying that there is nothing spectacular about it. It is important to not hype it.