Then there's the final battle. In that fight, they quite clearly do not have the ability to produce the amount of spiral power they need on their own. That's why Lordgenome has to sacrifice himself to convert the Infinity Big Bang Storm attack into an enormous spiral power supercharge.
So the part when STTGL drill was destroyed and Simon alone was able to destroy the same anti spiral drill with just his own spiral power (in gurren lagann) didn't happen right?
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XBL GT: Demon Ninja X2
"There comes a time in every man's or woman's life where they have to make **** up to cover their ass." - Hazama