Why give WMs abilities that we're asked NOT to use so much?

[Rbstr]

The enmity per healed point is the same regardless of the spell used.

So you need one cure III or two medicas to heal someone up after a titan EX jump? Two medicas is actually more absolute enmity as it's 300pot x2 for a total of 600 instead of 1x550. Sure, there's a rate issue, but if you're on a hair trigger where 2.5sec means striping aggro the tank needs to throw one more enmity combo instead of whatever else he's been doing.
I've never been in a winning group where I had to worry about using cureIII after the party-wide hits.

Medica II as the after-stomp/jump heal should be even easier to hold single-target threat against than a full-party-hit cureIII. It's not much initial threat and it's over time.

If you're using these skills when they're needed and not doubling up (say using a medica II and then curing people up instead of letting it tick) there shouldn't be much issue.