If Pike wasn`t supposed to remember details of his dissertation, they shouldn`t have brought it up. When he first meets Kirk he says that he`s his father`s son, that he didn`t believe in the no win scenario, etc, etc. And yet, when Krik points out that lightning storm and says that he read it in Pike`s paper, Pike gets a deer in the headlights look.
To me it makes perfect sense that Pike would remember a lot of details about George Kirk, the officer whose command decisions may have even inspired him personally, when he encounters George Kirk's son. Plus it's clear that Pike already knows a thing or two about James Kirk. He may have even planned to contact James Kirk sometime that week anyway.
Meanwhile the visual description of the anomaly the Kelvin encountered shortly before the appearance of a vast alien ship may not have been so fresh in his mind 3 years later in an, as far as he knew, completely unrelated emergency scenario.