If it was bad to power 130 watt speakers with less than that amount of power, they would fail with no power running through them
(think about it
What people mean, when they talk about underpowering speakers is one of two things. If you push the volume of your system too high, and clip the output, that causes a high average power level. You can damage speakers this way. It's less likely to damage speakers with an unclipped signal, as average power is lower. The other way to underpower, is not understood well by me. The theory is that some amps/receivers have enough power on paper to power some speakers to loud levels, but the results are unsatisfactory - perhaps because speakers are reactive, and the amp/receiver runs out of current...
The FTC (Federal Trade Commission,) created a law to dictate how power is specified. For receivers/amps with more than two channels, they have this verbage about 'all associated channels.' That verbage allows manufactures to choose what associated channels means...based on bench tests in reviews, they usually manage to meet rated power with two channels, but usually not with more (see some reviews with bench tests to see what I mean, 5-channel power may be a fair bit below rated power in some cases - 7-channel power may be pathetic for budget models, like 25 watts.)