Vir nodded "Yes, but every Space marine wear power armor, Grey Knights dont have monopoly on that, and true, they have the most powerfull psykers of Space marines, but that does not mean that regular Space marines cant handle similar situations... and for the second, think about the Space marines fighting Tyranids, those filthy creatures... what are dragons compared to those monstrosities? For example a hundred space marines wearing terminator armor battled to the death on macragge against many tens of thousands of Tyranids, its like the saying goes 'And they shall know no fear.' But nevertheless, what are dragons compared to most of what Space marines must face?"