Sentences 1 and 2 are not similar. Moreover, it is better to say "different
from", rather than "different
than". There are native English speakers who use forms like different from and they speak valid dialects. On this site, we should take the prescriptive view and promote the socio-economically preferred dialect of English, for the sake of those who are studying English as a second language and don't wish to learn lower-class junk. —
Kaz 9 hours ago