Have no idea what this guy is saying either. I didn’t think you were asking for a change either.
Anyway, the thing is, gear dependency is huge for some classes. This is something that’s relatively a nonissue on live. My memory is that healers had less of an outcome relative to what it’s like on live. This is not to say that healers were not important. They absolutely were. But I think the thing that matters most in PvP is gear.
Classic burst was insane if you compare it to what it is on live. The term “globaling” actually meant killing someone in one or two GCDs, which was very possible. A rogue might be able to delete 70-100% of a preist’s health in one Cold Blood ambush. This is really just unhealable damage, which is why I believe there’s more emphasis on big damage (and gear) rather than amazing heals. Not to mention, 5+ second interrupts and silences were more common among abilities which destroyed healers.
Every class had strengths and weaknesses, and I believe those strengths and weaknesses were more pronounced in classic. Which is why you hear people say “pvp was rock, paper, scissors”
The thing is, if you’re support, you’re actually a support. A healer sucks at 1v1s out in the world, unlike live where a healer is invincible 1v1. Prot warrior would also be support, but is necessary, because the bosses in AV need to be tanked. Obviously tanks make great flag runners, with feral druid being king. Again though, if you try wPvP 1v1s as prot, a caster will demolish you, might be able to beat rogues, but most damage will be able to kite and whittle you down and you can’t put pressure on them.
You really need to do some research about the different classes you’re thinking about and pick which strengths fit the type of gameplay you’ll be doing more of. A healing priest will be garbage in most 1v1 situations because super squishy but in group PvP can be quite strong on the backlines, no CD dispells, high troughput and versatile healing, shields. If you said you dip into PvE occasionally, priests are often the strongest healers there.
Meanwhile, a pally might be stronger in 1v1 situations because plate armor, shield, bubble, LoH, but might suffer from no AoE heals, not as many versatile heals as priest, and you’re not a priest healer for PvE situations.
Which, a tldr of all that, a priest is probably stronger healer in PvE and a pally is probably stronger in PvP. Strengths and weaknesses of the utility classes. But if you role a non-dps role, don’t expect to be winning a lot of 1v1s out in the world. You’re really more support in the sense than what a support role on live means. Good heals are great in BGs and sturdy tanks are needed in AV and WSG to an extent. But I feel big (geared) damage has the most impact on most PvP situations.