well if they are all the same i don't see how they would be improved/stronger than the old ones. everyone else uses at least some kind of reinforcement patch at the corner, kind of like the swt has. this spreads out the force to more than just the 1" or however wide the pull tab is. i don't want to say that it is sufficient or not. it's a new design so we won't know till they get some use in moderate to heavy wind. set it up next time it's windy out and see how it does.