Nikon 500mm f4 ED VR AF-S

Hi,
Is the Nikon 500mm f4 ED VR AF-S a significant upgrade from a Tamron 150-600mm G2?
Just Wex have a used one which looks like it's been in a war but it works & the optics are fine.
https://www.wexphotovideo.com/nikon-500mm-f4-ed-vr-af-s-nikkor-lens-used-3027661/?cpgnid=18123115155&adext=&account=853-353-2386&campaign=&group=&mkwid=_dm&pcrid=&kword=&match=&plid=&pgrid=&ptaid=&si=&gclid=CjwKCAjwu5yYBhAjEiwAKXk_ePI69L4rPajevWsT643owoiQbNqFaE6Ux-qbAiqg9lew8tiTbAkX2BoCmMcQAvD_BwE#prodthumb-carousel
Is the Nikon 500mm f4 ED VR AF-S a significant upgrade from a Tamron 150-600mm G2?
Just Wex have a used one which looks like it's been in a war but it works & the optics are fine.
https://www.wexphotovideo.com/nikon-500mm-f4-ed-vr-af-s-nikkor-lens-used-3027661/?cpgnid=18123115155&adext=&account=853-353-2386&campaign=&group=&mkwid=_dm&pcrid=&kword=&match=&plid=&pgrid=&ptaid=&si=&gclid=CjwKCAjwu5yYBhAjEiwAKXk_ePI69L4rPajevWsT643owoiQbNqFaE6Ux-qbAiqg9lew8tiTbAkX2BoCmMcQAvD_BwE#prodthumb-carousel