Same reason little of the tech 2 stuff got used. Notice how in TA multi everybody mostly uses vehicles and kbots hardly get a look in? It's speed. When con units have a 40 second treck between mass points instead of a 20 second one it makes everything so slooooowwwwww. In SupCom you lose a few extractors it's a huge deal in TA you've got loads so your whole production doesn't grind to a halt and a bit of reclaiming wrecks will keep you going till you can get the mexes back up. OH YEAH, the metal patches were more plentiful and closer together. Good players should be able to rebuild nearly more quickly than you can destroy them. People 'raided' the enemy bases because low level tanks could take out extractors quickly and keep moving. It encouraged people to send construction units all over the place and treat the entire map as their base. In Sup Com the construction units had paper thin armour and the mass extractors were slow to build and expensive with lots of armour. The mexes were cheapish and low armoured with short build time. In TA the construction units had a fair bit of armour. TA played well on tiny maps, huge maps, water maps, metal maps etc. Large maps didn't seem to play quite right.

It got better in the sequel but that seemed to be more by making most of the maps small. Might have been a price and build time of the units.

The units just got around the map more quickly, without having crazily sped up animation like SC1 after it was patched a few times. It seemed in TA that the game got going really quickly and escalated in pace. I'm going to end up making a few generalisations here because SupCom 1 and 2 were pretty different and it's been a while since I played them. I liked a lot of elements of Supreme Commander 1 and 2 more than TA but there were some aspects that rather got on my nerves.

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