striker takes 4 missiles to bring down a reaver or max, and 3 missiles for squito. Phoenix takes 2 missiles for a reaver.
i would personally take a striker over the phoenix just bc it is more versatile.
Yesterday in Dual Cycler MAX i took out a VS AI MAX and 4 infantry that were with it, just by clamping down. The MAX never tried to fly off or anything, just stood there and took a whoopin'. Best way to take down the TR max in that situation is fly off to the side and get out of his firing arc
