It may be a matter of taste, but I disagree. For what Battalion Wars asks of one, it works well, being a game that forces you to worry about multiple targets in a very short amount of time (action-oriented), in contrast to Pikmin which is perceivably very manageable thanks a much more relaxed pace (puzzle-oriented) and not-so-vulnerable player-characters and enemy groups that aren't as numerous and capable and agressive as your own Pikmin and tactics.
And winning in BW was... easy. Being careful and getting 90%'s in 2 out of 3 ratings, depending on player habits, on the *first try*, was a common occurrence. You see the map, know the objectives, and get the job done while improvising along the way. Surprise enemy advances and being flanked are to be expected given the "war" atmosphere. The mission-based setup is another obvious sign (that should've been seen miles away) you may be faced with trial & error. People die a lot many games, learn from their mistakes (yes, their mistakes, as in inadequate responses) and retry, win, and move on -- no big deal, that's video games. Getting S-rankings is the difficult part.
I actually welcomed the idea of zelda-targetting and unit management via C-stick. They helped it avoid becoming an FPS and avoid the menus & map-clicking of other strategy games.
But, saying Miyamoto could make a better game, despite him probably never bothering to make something like BW outside Pikmin, is a little unfair, don't you think?