On paper, I would say so, yes.
The PRX is only slightly heavier and slightly larger than the EON, and yet has a peak output close to double that of the EON (5dB).
It also has a significantly lower frequency extension at the bottom end.
So one PRX will be almost as loud as two EON's, will drop lower, weigh a lot less and take up a lot less space in the van. The PRX's are fitted with a superior threaded pole mount socket too.