TD is not being referenced ANYWHERE.
1 370 000 results on google when you type "Katy Perry Teenage Dream" that's tragic considering:
Rihanna Loud -
4 850 000 results
Lady Gaga The Fame
6 720 000 results
Lady Gaga Born This Way
35 100 000 results
Katy Perry PRISM
990 000 results
Lady Gaga ARTPOP
1 570 000 results
TD has less searches than ARTPOP

and The Fame which is an older album
No one is referencing Katy's work. Just because a couple thousands of teens buy her songs on Itunes, doesn't mean her body of work will be remembered.
Google is the ultimate source for EVERYTHING. Don't come at me with "google receipts

"
No one is talking about Katy's music, not even her most recent album.
In the meantime Taylor's album is not even over yet, and it's already bigger than TD.
I believe 1989 will be more remembered and referenced as a whole body of work 2, 5, 8, 10 years from now.
TD never had any impact as an album. The 5 number 1s from 1 album is the only thing, ever, where the album was commented on as a full body of work and that's only because of the 5 singles
and I think Blank Space will end up being a bigger classic than any song from TD sans Firework. But yeah as a whole album 1989 has been talked about so much, TD was never talked about as "the album".