I've had wonderful encounters with both CMs and TMs, and as one TM pointed out to me several years ago... in many cases, they're literally the same people. Many, many folks have worked for both Disney and Universal at various times. The fellow I was chatting with had, in fact, started with Universal, got a job with Disney for many years, and then returned to Universal. But he said he'd happily work again for Disney, if the right opportunity came up. He very much viewed both employers as essentially equal. And he's not unusual.
The guest services training in both companies is almost identical.
Perception is a fragile, easily influenced thing. One person's "best cast member interactions ever!" day might easily be another person's "worst cast member interactions ever!" day. Same day, different place, different time, different random encounters. Your trip and ours overlapped, and we found the CMs to be their normal selves - neither more wonderful, nor any less wonderful, than any other trip.
I'm glad you're having a wonderful trip to Universal, btw! I love those parks, too. Especially the HP sections.

We'll be heading there in October next year, and I'm very much looking forward to it - SO much less crowded, the deluxe hotels are lovely, really enjoy walking to the parks, and the unlimited access to express lines can't be beat!