There are more Iranian direct hits on just one Israeli base in a single 1 minute video clip, all later confirmed on satellite photos, than the total number of targets, 20, that even Israel themselves claimed they hit, never-mind the total lack of any evidence or how many were intercepted. If Israel has the ability to decimate Iran's military, they wouldn't have demanded in a panic US send 2 out of only 7 total THAAD batteries to defend them.Had the Israelis wanted to decimate Iran's military infrastructure to the best of their ability, they would not have informed their Iranian counterparts of their plans.
And while I'd hesitate to make any battle assessment at this time, the results are probably more or less comparable to that of the Iranian BM attack, at least in terms of casualties and infrastructure damage.
Israel's military is the same one they had 30 years ago, Iran's isn't. Israel had no understanding of Iranian capabilities, hence THAAD, while Iran knows exactly what Israel had. Most importantly, Iran knows what kind of Intel Israel has and had decades to adapt, while Israel has no plan on how to deal with a Iran who receives ISR, SIGINT, possibly even HUMINT support from Russia and almost certainly China.