Well you see, your 10A power strip will handle 10A at 120V
But the power brick is outputting up to 6A at 12V. If you check the input specs, it's less than 1A at 120V.
Which means not only can you run more than one, you can run about a dozen.
Take a quick look at the formulas behind electrical power for a better "why".
wow i really should have paid more attention in high-school! thanks for that! its 220-240V from where i live, im assuming that really doesn't change anything? I will certainly try when i get home from work! thank you!