Bot units excel at sustained pressure while vehicle compositions shine at concentrated one-lane rushes.
Bots have the edge in continuous, sustained pressure. They work well when you want to keep the enemy busy across multiple fronts simultaneously. Their mobility and lower cost per unit means you can maintain a steady stream of harassment.
Vehicles excel when you have good static defense or teammates covering your own defense while you commit all forces to a single lane attack. You push everything into one concentrated rush, then come back to repair and defend. The vehicle speed advantage makes this burst strategy more effective than with bots.
If you play defensively with strong static turrets and allies on other lanes, the vehicle all-in becomes a powerful option.
Some players prefer Cortex aggravator spam with laser turrets for defense, then pivot to vehicles. Others go full Armada with mace or rocket units as the transition into vehicle play. Both work depending on your playstyle and team composition.
[Crd] Gaming actually fulfills a human purpose here - cooperation, mutual upbuilding, fun and striving for greatness together. Instead of random anonymity, you meet, learn from, and enjoy real people.
Serious RTS play without the toxic baggage.