It's more about it being anti-climatic and horrible. The fight was really only 5 chapters, hell, even 3, considering in 276, Byakuran had Tsuna in a sleeper hold for the entire chapter and they didn't even fight in 277 (Tsuna was getting his zenkai. =). The fight was entirely one sided until Tsuna got his power up in 278, where he finally got a hit. They fight for awhile in 279 and then Tsuna kills him with the X-Burner in 280. It was a short, unsatisfying blow off for this long arc. I much preferred the Varia Arc, the series has really hit a slope.