Not as in games that look to disappoint, but games that have such an incredibly high bar set for them by their predecessors that there's an almost unfair amount of pressure on them.
For example, in my humble opinion, Uncharted 4 and Xenoblade Chronicles X look to be great games, but they'll still likely have their work cut out for them because of how stellar Uncharted 2 and the first Xenoblade were.