Weakest gun protection of the Lot. Its fast for a Bomber but its speed is nothing compared to fighters of its era. You really have to be bad to get whacked by the guns of the thing. Come into a set of 3 with any kind of energy and your thru them before their weak guns can do much damage to you. The fighters Ive shot down have mostly done something incredibly stupid, like hang up high after the attack within gun range or come in dead 6 with very little "E" advantage. Cannon birds with a little bit of skill down TUs easily. What the TU normally does is cripple singles attacking, and even then mostly MG armed birds.
2 20mms are really a rather modest strafing package. The ROF seems slow and its not like you can strafe with 3 at a time effectively. Also it handles rather woodenly. Not even close to the Mossie.
And its only fast low. 7 to 8 k is its sweet spot. Its not even in the Mossies class. The only thing the TU is good at is getting 6600 lb of HE to Alt, and then to target, quicker then any other prop bomber/attacker. Its a good tool but not anything uber. Like any other non-perked plane you have to develop tactics that increase success rates. The biggest of which is DO NOT attack in the conga line and come it at off angles.
The A26 I'd have to say "would" deserve a perk. Faster and almost twice the bombload along with an incredible package of forward 0.50s. It was also more agile and responsive. When all that is put in a package that could go 350 mph I'd call it "uber" and perkable. But the TU? No way.