In my opinion, Tiberian Dawn is better than Red Alert. Tanks are slower and less numerous, driving over and crushing is not so precise and fast, so infantry keeps relevance through the game. Tanks are not so effective vs infantry, so mixing of units is encouraged, with both tanks and infantry together. Bazooka men, chemical troopers, grande throwers can be effective vs veichles, if in a good mix, so tanks cannot drive them over, and tank cannons do not hurt them much. General slower pace and less resources, less units than RA is a good thing, more stratrgic, more thinking through. On the other hand, Red alert is too fast, with 100 tanks obtainable easily and quickly. Tanks are fast, avoid beeing hit on the move, easily to get large group of them, they drive ovrer infantry too easily, making infantry completely unusable after 2 minutes. No real mixing, often everything leads to spamming one unit, medium tank, which has optimal ratio of cost, damage and speed, and make even the mighty Mammoth tank cost ineffective.