Nah, it's alright. I really don't think R2 is bad, though. I've been using it for years and I still like it. Just did a 15.35 average of 12 with
qq's corners only scrambler, and I'm not the fastest turner and I did it sighted where I can't look ahead as well as the top blindsolvers can from memory.
Average of 12: 15.35
1. 15.39 F L B' R' D2 R' B L U2 F2 D2 B' R2 F' L2 D2 F' U2 B2
2. 16.54 D B2 R2 U2 B2 R2 U2 B2 D' R2 B R2 D R2 D' B' U2
3. 13.40 B' L2 B' D2 F' L2 B' F' D2 R2 D2 U' B D B F2 D B U'
4. 13.36 R2 U F2 B' L2 B' R2 D' F2 R2 F' L2 F R2 B' D2 L2 F D2
5. 16.15 U B2 R2 U L2 B2 U' L2 D' L2 U2 F L2 U R2 D2 F2 U B'
6. 15.10 F2 L2 B2 D' B2 D' F2 L2 B2 R2 U' B D' F2 D B U'
7. 16.14 F L2 B2 R2 U2 B D2 L2 R2 F' R2 U F' D' F' D' F' U
8. (17.82) F2 L2 R2 B R2 B U2 L2 D2 R2 B' U B' F2 U' F2 D2 B U'
9. (13.05) U2 L U2 L' D2 R' B2 R D2 L' F2 U' L R U' L' R' U' F2
10. 16.83 U2 R U R F2 R' F2 U' F2 B2 U2 R F2 L' B2 D2 R2 L U2
11. 14.62 F2 R2 U2 R2 U2 B D2 B R2 D2 L2 U B2 F' D2 L2 R2 B D
12. 15.94 D2 R' F2 L2 R U2 L U2 F2 L D2 B R F2 R' B' F2
That said, I doubt Marcell uses R2, so I don't see why he would make a tutorial for it.