W132/CY2510 vs. W232, internal termination (Zo Rs ~ 50) vs. external termination (only Zo). This may/may not be an advantage as the user can have better control over trace matching. Also, process variation can cause the terminations to vary. On the other hand, having the built in termination can reduce/eliminate on-board components.
W132 vs. CY2510 - CY2510 has better tracking skew