No worries Guges, as Panzer said your list was not particularly broken. Honestly, I think it was a solid list, but definitely not OP. Sounds like the terminator guy was just looking for an excuse to bring his terminators and you, unfortunately, got to be the one to be singled out to experience his complaining about OP.
Though I am curious of what his Terminators were, since they aren't normally troops (though I know some armies can get them to be troops), just because it would be amusing if he was actually fielding HQ and Elites instead of HQ and Troops.
But no, three crisis suits with missile pods is definitely not OP. Actually, if you really wanted a very silly, but thoroughly amusing list (were Warlord Traits allowed?), you could have done the following-
HQ- Shadowsun (to confer Cover Saves and for that 3D6 jump move, not to mention two fusion blasters, as well as her drones being useful too).
Troops- 3-9 Crisis Suits with a mix of Plasma Rifles and Cyclic Ion Blasters. The PRs will shred elites, the CIBs will destroy everything else. Give them Counterfire Defense Systems, bring gun drones to take the ablative wounds- basically an all-comers deathstar configuration.
Only way they're going to stop you is if everyone gangs up on you. If you can't use named characters, then simply substitute the following for your HQ to generate the most rage in your opponents-
HQ- Commander- Iridium Armor, Fusion Blades, Shield Generator, Stimms, Command and Control Node, Multi-Spectrum Sensor Suite, Onager Gauntlet
Now, some of that may seem a little redundant and it may, at first glance, look like you're missing out on that delightful BS5 shooting from your commander, but rest assured, the CCN and MSS will more than make up for that- the commander is there to look awesome, force-multiply for your crisis suits, stand in front and tank wounds, and then, just in case someone ever does charge you- shred them. Because he's actually pretty solid in CC.
Just my thoughts on the subject.
When we forget we are soldiers, we stop fighting.