Hey mates, just came off of a very good game vs black and velly. We were starting to pull ahead, but lost after overtime due to siege play by tower. My partner and I tried a few different things to break it, with moderate success, but I'm curious if any of you have a go to strategy when dealing with this setup.
Our units and mercs:

Myself: destroyer marine dark archon
teammate: sniper marine odin tanks

Black: voidrays viking corrupter phoenix
Velly: Goliath tanks tass archon.

Lifts from phoenix made it difficult to get close with dark archon, and tass archon storms would usually provide enough initial damage so that we couldn't crack them. Do you think that spec/ dark archon would be a better pair then odin/ dark archon?

Emp phoenix and archon, plus nukes could force tanks and army to pull back from ridge

any thoughts?

A DT with strong rines could break that up with ease. A tassadar could also deal with it as long as you had OS to stun the archon and hero DMG to do more to it.

Spectre would probably be the best option since it has nuke and emp which counter archon and camping.