High-tech were not top gods in all releases, and in some previous releases, some low-tech ships were the most powerful ships.
During early 0.6a, Medusa was the god ship that could solo everything. It had unlimited PPT. Back then, ballistics had limited ammo. Enforcer could solo fights, but it was hard because of ammo. Needlers, Maulers, and Hellbore had the longest lasting ammo. Back then, high tech could be considered the best because energy had unlimited ammo, but not ballistics.
0.65, almost everything worked fine, although frigates were optimal in combat because they had superior campaign stats while punching as hard as everything else as a fleet. And when I say frigates, I mean mostly common frigates like Lasher, Wolf, Vigilance, and even Cerberus, led by Hyperion flagship. Tempests and Hyperion were very rare and nearly impossible to buy, and Scarab (plus Centurion, Wayfarer, and Shepherd) did not exist back then. Easiest way to get them was to board them after combat, which was frustrating RNG. However, food runs blew combat out of the water for leveling. Hyperion could solo enemies that intercepted your 12+ Atlas fleets hauling food.
During 0.7a, Onslaught was the god ship. Dominator was the best cruiser (and it had burn cancelling). (Aurora with Cyclone Reaper was good, but was no match against Paragon. Dominator could solo the simulator.) Paragon did not have Advanced Targeting Core at the time, and Tachyon Lance lost its 2500 range. Dominator could crush Paragon flawlessly. (I like to see the new Rift Cascade Emitter work like old Tachyon Lance with 2500+ range.) Also, later 0.7a releases had Burn cancelling (that got removed in 0.8a.)
Also, before 0.8, Hammerhead was awful, with low OP and AAF without flux discount. Hammerhead that used AAF loses flux war almost immediately and commits suicide. Enforcer was strong, and with superior ballistics (when ammo limits were removed), was roughly on par with Medusa.
Starting at 0.8, when skills were greatly weakened and AI became the cowards that they are today, low-tech was hurt more by the changes. Also, Conquest was buffed and became a fast battleship instead of the flimsy oversized cruiser that a battleship could easily crush.
However, a low-tech fleet could work in killing Ordos in previous releases. It was not the best (because of Sparks and Drovers), but it worked. If anything, pure midline that did not use Drover/Spark cheese had the most difficulty.
And all of the talk about high-tech dominance forget about Wolf. Starting with 0.8a (or at least when ion cannon range got cut from 600 to 500), Wolf got left behind, good only for shining beams at unshielded pirates early in the game. Wolf was good in earlier releases, with omni shield and could solo cruisers and capitals with pre-0.8a skills.