Actually, it is probably superior in its dispersion as a center channel speaker (and in its matching to the L/R) than so-called dedicated centers. I used one, for a while, as a center with a pair of Studio60s until I obtained a 3rd 60.
Other way 'round. The beaming and venetian-blind variation is a problem for off-axis listeners.
I thought the center channel attempted to provide off-axis listeners the same effect as on-axis listeners. Thus, for on-axis listening only a phantom center channel would work better than many real physical center channel speakers. You are saying this is not correct?