It all comes down to chance with me. I ran in 5 different raid groups before reset this tuesday 4 of which I was the lowest grimore score while others were in the 4200+. I'm not one for pointing fingers but lets just say I made little to no mistakes while they did and I'm talking noob mistakes. My last run however consisted of low grimore scores and we completed so smoothly with great communication. I agree to disagree I suppose.