Golem vs Tyranitar

Golem is better for Legendary Bird Raids but Tyranitar ain't that bad either and Tyranitar is better as a Generalist

Against Lugia, Tyranitar.

The rest, golem.

But both are good

I wouldn't use Golem against Articuno due to its Ice moves totally wrecking ground types. I read reports this morning about folks being OHKO'd using Golem. In all fairness, a legendary's move would pack a wallop against anything, but taking SE damage would be even worse.

Against legendary birds: Tyranitar!
I don't have a B/SE Tyranitar, but I used a B/C one (the only one I have actually) at an Articuno raid and he did well (at least he disn't die after just ine charge move). I had 2 Golems in my lineup and they are useless. You can barely get a charge move in before they are fried by Articuno's charge move. So I would definitely say Tyranitar is better.

Golem if you like to dodge, Trex if you don't.

I prefer Tyranitar B/SE currently, but we'll see how Golem does against Zapdos and Moltres (he should perform better).