Light lancers have insane charge bonuses (+15!!!) so they would benefit. Roundshields get something like +2 so it has only a small impact for them, and you might lose more men trying to disengage. You really need to be aware of the charge bonus before deciding whether to pull back and charge again.

The desert light cav are really odd. They are the only cav unit that size, and they get a +4 for that dinky shield...should be +2. The Egyptian unit stats are not in sync with their 3d models.

Unit size is an issue with some phalanx units as well. In MTW spear units were large relative to sword units. This allowed the spears to hold their ground for awhile even while being killed off. In RTW some phalanx units are the same size as the sword infantry they face. The swords wrap around with their wider frontage. I've modded to increase good smaller phalanx units all to the full size phalanx size (a 50% increase.) The base level trash phalanx units have been left at the default size or only slightly greater (+25%). Several became too powerful at full size.