Center Channels sound crappy

Why do center channels sound so crappy with music?

This is something that absoilutly baffles me...

I was talking to a KEF rep at SoundTrack audio, he said it is becuase they are designed for dialogue more than anything else.
What im wondering, is why can alot of center channels only give marginal preformance with music?
My front KEF Q1's do a fantastic job creating a phantom center channel, the dialogue is crisp and clear. They do a fantastic job on music as well.

Wouldnt it make more sence to just get another KEF Q1 for $225.00 and use that as a center instead of paying 350 for a speaker that does great voice but crappy musical preformance?

I know it was not the "center channel" amp either, it is on a DENON 3803 and all channels are identical, i was playing it with the 5/7ch stereo mode and all the speakers sounded great for music but the center channel really really sucked..

i noticed this with my past DefTech setup as well...

has anybody done a serious comparison between a center channel and a monitor of the same brand with same drivers and heard any vast improvement with the center speak with dialogue?

does it have anything to do with sound dispersion?

----- Slappys disclaimer-----
It was not my intent to offend anybody with the above post, im genuinly curious and hope it does not offend anybody becuase that is clearly not the intent. If so, please reffer to "My Apologies" thread which explains more.
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THANKS IN ADVANCE