Fair enough. But a win is a win, no matter what--and any writer who finds commercial success on a national or international level deserves enormous credit for their achievement. It's not as easy as most think and Kreisberg deserves credit for his success as well as for writing a strong and powerful story regardless of the medium.
Claremont hasn't had any significant success outside of X-Men in my humble opinion. However, both Wolfman and Levitz have had big successes on their own without Perez and Giffen. Wolfman was the one who spearheaded revamping Lex Luthor during Byrne's Man Of Steel and he's the man who wrote the character of Slade Wilson AKA Deathstroke--Perez only designed the costume--and Deathstroke has been a *huge* success for decades. Also, I hated "Titans Hunt" with a passion, but even I have to admit it was a huge success and is beloved by many Titans fans. And he didn't write that with George Perez so don't give all the credit to GP. As for Levitz, Paul is the architect of some of the most beloved Earth 2 characters long before his work with Giffen on LSH. He created Power Girl and Huntress and wrote the Death Of Batman all the way back in the 70s. Levitz was very successful long before he teamed up with Keith.
As for Giffen, I'm not a fan of 90% of his work after 1983. His love affair with the style of artist Jose Munoz ruined his art for me and I absolutely loathed his solo run on LSH in the late 80s. But I give him credit for his success with Lobo and as one of the architects of 52. Plus, he continues to be one of the creators who is still pumping out stories loved by fans even 30 years after his 90,000 copies-a-month LSH peak in 1983.
Kreisberg has won me over with Arrow and he's earned my support for his run on Vibe. It's the one book I'm most excited for so far this year. I hope it beats people's expectations and is a big hit.