I played that 100,000 point response, and through a dodgy setup, managed to approach your fleet in a sort of single or dual-file. I’ve never seen so many beam weapons impacting single ships!
After a couple of setups/attempts, it became clear that missile ships out on your periphery could defeat the cruiser blob.
As it turns out, I’d lost the ‘keep moving’ orders by experimenting with ‘formation.’ Once the battle was launched, my missile ships moved up, then sat in their own blob, out on your edge, whilst the laser fighters smoked fairly well everything.
The impressions gleaned from the whole thing were, that the Rebels need more speed. I like ships that move at a decent clip. Massed beams are amazing. Rocket fighters are going to be more effective in general against Tribal Cruisers, than those of the other races. Of course, if the Tribe players put a yellow shield generator on their cruisers, rocket fighters are obviated; at least until shields are down. As you alluded to, massed laser fighters are murder on fairly well all cruisers.
One thing I did not attempt, was loading up on cruiser lasers and doing a massed rush of your position.
edit: Obviously, rocket and beam ships were dispatched with extreme prejudice by that cruiser mass of yours.