Is PSP weaker than PS2?

I'm curious to understand your perspective on the comparison between PSP and PS2. Is it fair to say that PSP, as a handheld gaming console, is inherently weaker than the PS2, a more traditional home console? What specific factors or features would you consider when evaluating their relative strengths and weaknesses? Additionally, how have advancements in technology since the release of these consoles impacted the overall assessment of their performance?