I’ve done an in depth study of both Haloverse tech and Trek tech for nearly a year to help me write a crossover between the two. (Yeah, I’m a geek)
Halo: Reach retconed the calcs for MACs, and thus Titanium A’s strength/heat resistance. Otherwise this would have been a stomp for PoA.
Pillar of Autumn:
Length: 1.17km
Power source: Triple fusion reactor. (One primary, Two secondary)
Weapons: 1 modified MAC (triple fire capability) fitted with shredder rounds (64 kiloton max kinetic yield)
Unknown number of Shiva nukes (Unknown yield)
3 Havok nukes (30 megatons each)
300 Archer missile pods (Chemical explosive warhead)
40 50mm point defense guns
Defenses: 2 meters of Titanium A, no shields.
Sub-light Propulsion: Fusion engines, actual speed debatable, but less than .1c
FTL: Shaw/Fujikawa Translight engine. Approximately 2-3 light years per day.
Sensors: Radar, Spectroscopes
Note: Weapons can be controlled by a ship Smart AI, namely Cortana.
NCC-1701-D
USS Enterprise
Length: 641 meters
Power source(s): Matter/antimatter reactor, output in excess of 12.75 million gigawatts. Secondary sources include more than three fusion reactors.
Weapons: 12 Type X Phaser arrays(particle beams). Actual output of these arrays is hotly debated, but several quotes from the show have them at a minimum of 60 Gigawatts for one array. (Output is variable)
250 Photon (anti-matter warhead) torpedoes in rapid fire launchers(up to ten at a time) Actual yield is also debated, but generally accepted to be mid-double digit megatons. Yield is variable and the torpedoes are shielded and guided.
Defenses: Shield grid whose strength is at the mercy of the plot, but has been witnessed to sit in the corona of stars for several hours before failing. (Also included the Navigational deflectors, which deflect physical objects at high impulse and warps speeds)
Sub-light Propulsion: Impulse engines (speed is varied, but generally around .25 light speed)
FTL: Warp Drive, roughly the speed of PoA slipspace drive, but has witnessed to be much faster and slower due to plot inconsistencies.
Sensors: Various, but all of which operate at FTL speeds and can scan light years around itself in real time. Same goes with communication.
Note: Ent-D can separate into saucer and star-drive sections, both using their own weapon systems independently. It also has transporter abilities, but since this is ship to ship only, they are not used for boarding the PoA. (Master Chief vs. the pajama boys, oh lord…)
Conclusion: Without shields, the PoA would likely get gutted by phaser fire and photon torpedoes. However, if the Ent-D shields are vulnerable to the MAC rounds, then Enterprise might get gutted if Picard is stupid enough to put his ship at the front end of the PoA.