No, probably not...
We refer to a tendancy we call "big mans aikido" where big strong guys use strength to power through techniques.
It looks good, it isn't difficult to learn and it is effective - up to a point.
However the problem comes when they encounter either someone who is stronger, or is much better than them.
There is always someone stronger out there than you, and if your technique won't work on them - then it is fundamentaly flawed.
I think it is *much* harder to learn how to do techniques in a relaxed and soft way - but the end result (a long way down the road for me) is controlled aikido that doesn't hurt uke and will work on the strongest of opponenets.