The fundamental pitch sounds similar but the tonal quality is different. The infamous "You've Got Mail" is probably lower bit depth and sample rate which lead to crunchier and darker sound qualities respectively. It also sounds like the AOL soundbite was recorded with him very close to a dynamic mic with a healthy dose of proximity effect which would explain the omnipresent low frequency.
The ars article on this suggests it was simply recorded on his personal cassette recorder:
https://arstechnica.com/gadgets/2024/11/the-voice-of-america...