On the science vessel, an alpha strike send your ship to scrap.
On the assault cruiser, it works well... but I must try more.
In a comparative test with my covariant capx3, on the cruiser has work much better for "large" battle. The covariant had a low risk to be destroyed by a alpha strike, but the shield even recover it on attack energy profile.
with the science vessel the covariant stand longer than ship's hull beacuse bleeding damage.
Ressiliant for science (i must try a ressiliant capX3 (when I have points to buy it)
Covariant (capx3) for escorts and regenerative regx3 for cruisers...