With the default loadout, this mission is a total mess. The Tempest will shred your Hounds and Fighters with impunity (And that stupid respawning drone it has can go straight to hell), the Wasps will outrun and outgun your Talons, and the Praxis itself is always flanked by it's Brawler-and-Vigilance escort.
It has enough shielding to block almost anything you throw at it (The default Hammerhead has Assault Guns, Sabots, and PD Lasers. Good luck taking out shields with that...), and the AI is good enough that it will almost always recognize Bombers as an omega-level threat and annihilate them.
At least in my experience, the AI has gotten too good for that "Use a Rally Strike Force waypoint and a Strike Order to have the bombers hit it from behind" tactic you're supposed to use. Every time I try that, it turns, blocks the bombs with its shield, and unleashes every weapon it has on them.
And while it's doing that, that damn Tempest and the Brawler/Vigilance escorts will gang up on you (Also blocking your weaponry with their shields so you do almost no damage) so you can't flank the capital ship.
It's just a total mess.
If I refit the ship, it can become stupidly easy, though. Heavy MGs or Hypervelocity Drivers let me overload the inferior shielding systems of the Praxis and Brawlers easily, and a pair of Reaper Torpedoes pretty much demolishes the overloaded Praxis in combination with the bombers.
So, in summary, something needs to change with a lot of the missions. Either the loadouts need tweaked, the AI needs to be toned down, maps need to be changed, or some combination of all of that.