Are they really underrated though? I've never heard anyone say, "Man, Assyria sucks". Admittedly, Assyria is nerfed on Deity because early city capture is so inadvisable. You're much better off XPing your CBs until t90. Siege Towers are actually detrimental. If you use them to capture the city quickly, no one gets XP. Even if you just use them as a meatshield, the +50% damage means less XP for your archers. The city is at zero health 50% faster, so 50% less XP... But, underrated? Getting a free tech from capture is obviously helpful when you do finally capture. Who disagrees?