Or Arty, as another example. He can lift up to five tons with ease if he uses his ability to boost his strength, but when he does so he loses ranged capability. Without boosting, he is as strong as it is possible for a human to be when they don't have to worry about breaking bones or tearing muscles beyond repair. His lightning has definitive limits at 1,000 and 3,000 degrees (uncharged and charged, respectively), and his range is also clearly defined.

So all you need to do is give a number for his basic stats. Can he lift 3 tons? 5? 10? How fast is he? 60 mph sprint? 100? 150? How durable? Can he take a bullet? What caliber? What about armor piercing? What about a knife? Or a grenade? (Keep in mind these are three different types of damage).