Someone wrote a blog post about regular vs giant strawberry pockys and has a size comparison of the two. From memory, I'd estimate them to be about twice as long and wide: http://www.rachelleb.com/2008/03/25/attack-of-the-giant-pocky/
I wouldn't say 'too big', you just have a lower 'coating' to 'breadstick' ratio. More crunch less sweet coating. You should give them a try though!