Yamato cannons give Terrans an advantage that few take advantage of. A pair of battlecruisers can take out ANY turret in 1 volley. As few people focus heavily on air defense a group of 6-8 battlecruisers can wreak havoc on a base. Maybe not destroy it but while they’re busy micromanaging a defense, you’re busy building a replacement force and preparing for the next attack, or expanding if that is your desire. It’s an expensive distraction but I’ve used that tactic in almost every RTS I’ve ever played and it works every time…
…unless you learned agressive turtle and bait-switch tactics from me in which case I move on to Plan B.
If you want to really brush up on your RTS skills, go play supreme commander. The AI is adaptive and can really give you a run for your money on the upper settings.