Why doesn't the 150% and 200% special power boost work all the time?

I'm in war, doing a fight...I do an sp2, I can see my power regen 200%, I do another one... it doesn't do anything... And no, the node isn't preventing the power gain. I guess it says "up to"...meaning, it can do 1% every time...lol
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Comments
I don’t know.
Dr. Zola
For example if you use a tech champ against a cosmic champ. You will not gain the power from the boost.