there really is no way to outright say who is better in any sport discussion...it all about opinion/preference
Football is the hardest sport to determine who is the best, on the defensive side of the ball its way easier to judge who can hold their own then on the offensive side of the ball. When you start looking at WR you have to look at do they have a run game, who is lined up on the other side of them, do they have a QB.... RB you look at if they have Wideouts to spread the field and open lanes, do they have a QB with an arm to keep the D true, do they have a strong line... QB, do they have Wideouts, a run game, good pass protection etc.
on Defense it does matter whos around you no doubt. a DE with DTackles who are gonna eat up linemen as well as another great pass rusher on the other end helps but its much easier to judge how great a defensive player is compared to an offensive player IMO. You hold your own, stuff your gaps or lock down your man/zone and it translates to great play from your end. You may not get a lot of looks publically because as a unit youre trash but n*ggas that hand out the money recognize the real and you will get your money and then people will start to commend you for your play when they see youre pulling 7+ mil a year like "lemme check out if dude is really THAT nice"