To think that the enemies is going to admire you because you attack and try to kill them in an honest way is very foolish. Anybody could just attack someone without thinking about the consequences, but that doesn't necessarily mean you are any braver or honorable. It could just mean you are selfish and willing to sacrifice your warriors all for the name of glory; that is an often a characteristic of a weak person. Furthermore, your enemies would probably try to prepare counter attacks and your warriors would have died for nothing which makes you selfish and power hunger. And It's just a waste! They would probably think you are very stupid for not preparing for the battle carefully. Unless of course, they challenge the Klingons for a hand to hand combat, then that would have been different stories. Or if the flagship leads other warriors into the crossfires if he thinks he's good enough in avoiding being destroyed, that would be honorable.