[quote=@Sophrus]
OK, quick question on psyker sillines. An alpha-plus psyker can't destroy large war Titans easily right? I mean, that is just exaggeration. (And would be ridiculously OP)
[/quote]

Alpha-plus literally means "off the charts". Theoretically there is no limit to what an alpha-plus psyker can achieve, and the Lexicanum specifically mentions snapping a Titan in half as an example.