Please note I said "does not appear to me", recognizing others may have different perceptions.

In terms of my set up, the L and R speakers are Mythos ST. The Centre is a Mythos 10 which has the same midranges and tweeters and is supposed to be "matched", recognizing the cabinet and horizontal orientation of the centre is by definition not matched. The Centre is on the top of a table and only a couple inches below the midrange and tweeters of the STs, so I think the positioning is relatively good, given it's not practical for most to get the tweeters on exactly the same axis