Very logical, the rook overprotects the  seventh rank thus allowing a chance to the queen to be activated. Logical, but not perfect.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. f2f3  6... e7e5  7. d4b3  7... c8e6  8. c1e3  8... b8d7  9. g2g4  9... f8e7  10. d1d2  10... e8g8  11. e1c1  11... b7b5  12. g4g5  12... f6h5  13. c1b1  13... d7b6  14. b3a5  14... a8c8  15. a2a3  15... g7g6  16. h2h4  16... h5g3  17. h1g1  17... g3f1  18. g1f1  18... b6a4  19. c3a4  19... b5a4  20. h4h5  20... d8d7 A novelty. The  queen is well placed on the seventh rank, both ready to protect the black  king from the kingside attack and get to a better position on b5 for  instance. 21. f1h1  21... f8e8  22. d2h2  22... e7f8  23. e3d2 Nice regroupment by Aronian. Bb4 will hit the backward pawn, defend the knight and block the b-file from the  major piece attack.