Apollo (Myrmidon)
Values taken from FSPORT.
$Max Velocity: 0.0, 0.0, 60.0 (75.0)
$Rotation time: 3.2, 3.2, 6.0 (4.0, 3.7, 5)
$SBank Capacity: ( 40, 40 ) [ 20, 20, 40 ]
$Shields: 350 (390)
$Power Output: 2.0 (2.4)
$Max Oclk Speed: 82.0 (95.0)
$Max Weapon Eng: 100.0 (150.0)
$Hitpoints: 240 ( 290 )
$Afterburner: YES
+Aburn Max Vel: 0.0, 0.0, 140.0 (135.0)
+Aburn For accel: 0.7 (0.8)
+Aburn Fuel: 300.0 (320.0)
+Aburn Burn Rate: 50.0 (60.0)
+Aburn Rec Rate: 25.0 (25.0)
$Countermeasures: 25 (36)
I'd say they're pretty even.
The Myrm is faster normally, but the Apollo burns faster. The apollo uses less fuel, but also holds less fuel. They have the same secondary capacity, but the Apollo has less weapons energy.
The Apollo handles better (expect in that last value), but has slightly weaker in terms of shield and hull strength (by 40 points each).