Your ECs are “competitive” in that they aren’t terrible, nor are they “awesome” and thus they will probably have marginal bearing on the success of your application (outside of the really holistic schools, maybe). That’s not to say they don’t matter - there are old posts on here which go into detail on what adcoms look at from people who actually sit (or sat) on them. Your ECs, personal statement(s), sketch, etc. are all read by adcoms and can play a significant role.... it’s just that unless these are truly significant (ie elite athlete, published/recognized academic, politician) they aren’t likely to make up for poor stats (and a 151 is very low).
It’s already been described why people are agitated by the posts that overvalue certain ECs but let me also add that it comes across as kind of insulting when someone believes that their mediocre ECs should allow them to overcome poor performance on the standardized test that we all had to grind out, sometimes over the course of months/years. In saying that, you have a great GPA but even for Windsor you’ll probably need to improve that LSAT.