I said glass cannons. You're basically required to run lock-ons as infantry just to try and get some reasonable damage off on them. In addition, Harassers, at least on Connery, are used more than Lightnings when people don't have the resources for MBTs, since their speed combined with their damage output makes them huge threats to infantry and tanks alike. You're talking a lot of on-paper stuff, such as Tank Mines being more effective against Harassers thanks to their speed reducing the effectiveness of Sweeper HUD, when the reality is they are least effective against harassers. I can't tell you the number of times people have run straight into tank mines on all factions, and while other vehicles are damaged, Harassers get by without a scratch.