Nope, in fact the Cleveland game was the exact opposite of what you "remember".
The only thing we struggled with in the Cleveland game was stopping LeBron in the 1st quarter. Our offense was firing on all cylinders and scored 31 points in the first quarter. Then Robinson, Barter and the rest of the bench entered the game at the start of the 2nd and we scored a total of 7 points in 6 minutes. We were down by three when Robinson entered the game and down by 3 when he left. In the final 6 minutes of the 2nd after Robinson and Barton left the game and the starters re-entered we went on a 17-9 run and took a lead that we never relinquished. The starters extended that lead in the 3rd quarter (mostly by shutting down LeBron) and we won going away. Robinson's and Barton's "energy" had nothing to do with that win. The only time we struggled to score in that entire game was when they were both on the court during the first 6 minutes of the second quarter.
Our bench did give us a boost in the Dallas game, but but it wasn't Robinson and Barton, it was McCollum and Kaman that gave the bench a collective +3 points at the start of the 2nd quarter. That was C.J.'s best game of the season (so far) with 13 points and 3-4 3FG. But, as usual, if was the starters that won that game for us. The starters (plus Blake and Kaman) went on an 35-18 tear in the 3rd quarter to put that game away. Neither Robinson nor Barton played one second in the decisive 3rd quarter. Their only "contributions" came during 4th quarter garbage time with the game already decided. I know there is more to "energy" than stats, but if that energy doesn't lead to anything positive, it's wasted. What I see when Robinson and Barton enter the game is an occasional spectacular, amazingly athletic play combined with a shit ton of stupid, unforced turnovers, dumb fouls and blown defensive assignments. Yes, our bench did give us a boost in the Dallas game, but it was Kaman, Blake and McCollum (especially Kaman and Blake in the decisive 3rd quarter). Even counting their garbage time contributions, Robinson and Barton scored a combined 3 points on 1-5 shooting, had 4 REB, 3 AST and 4 TOV. By comparison, Kaman. Blake and McCollum scored a combined 33 points on 13 of 19 FG (5 of 8 3FG), 9 REB, 6 AST and only 1 TOV.
Your memory seems to be failing you. Seems more like wishful thinking than an accurate version of the actual events as they occurred.
BNM