game-debate system requirements

[Calling John]

when it comes to game-debate.com and  putting in my system specs then searching up a game and clicking system req are the % that they give a good rough estimate or are they way off ? and what setting would it be basing games on

have an old atom laptop with gma 3150 (will use modded driver) 2gb ram and 500gb hdd i was given and i want to load it up with a bunch of old games i don't want to download games that show over 100% for cpu gpu ram on there website and then it turns out they run really bad on it 

searched up halo ce and it says
cpu 180%
gpu 119%
ram 390%

half life 2 say
cpu 115%
gpu 99%
ram 780 %

Max Payne 2
cpu 129%

gpu 69%
ram 390%

even if these are off would the game run fine when everything is set at the lowest setting and give me a min of 30fps?

[Sauron]

They're completely meaningless, those games should run ok on your laptop though.