Absolutely Pedro. I probably don't have to explain my reasoning, but what the hell, I'll do it anyway! This says it all:
He has a 10.43 K/9IP ratio.
4.36 K/BB (although this has been falling drastically in the past few years)
.712 career winning percentage
His 99 season was the single best performance by any pitcher I have ever seen. Ever.
Pedro also has a career 2.63 ERA
Clemens, on the other hand, has had a much longer career, and has been able to rack up strikeouts and wins and whatnot. But take in to consideration, he's also fat. Here are some stats about him:
Clemens has a career 3.18 ERA
8.65 K/9IP
.665 winning percentage (and he's been on the YANKEES, so why isnt this higher?)
2.97 K/BB
Ok, he has 314 wins, but he's been pitching for 20 years.
I took Clemens's wins, divided by 20 (his years playing) and got 15.7 wins per season. I did the same for Pedro, and he has 14.4, a difference of about 1 game per season.
So, in the statistics that really count, Pedro is far and away better than Clemens. That's why I voted him. Also, Clemens began to deteriorate at the end of his Red Sox career, prompting Duquette to say he was in the "twilight" of it.