Our strongest line-up is surely 3-5-2-1 Sanchez, Cucurela, Webster, Dunk, Duffy, Lamptey, Bissouma, Lallana, March, Trossard, Maupay.
That XI would guarantee a finish between 8th & 12th
Gross has contributed way more in terms of goals assists and build up play and is far more reliable in terms of fitness and defensive shape. There is no obvious gulf in class they're both good.