Make sure you're comparing apples to apples. Launches are usually scrubbed because of weather. Repeatedly bringing a rocket to the pad on launch day that's ultimately not flight-worthy is different than scrubbing because of higher than nominal cross winds.
And this case is particularly spectacular because while it's ostensibly just a test, they are literally using the exact same engines that the Space Shuttle used. Not as in the exact model, but literally refurbished RS-25 engines that already completed successful flights on the Space Shuttle.
And this case is particularly spectacular because while it's ostensibly just a test, they are literally using the exact same engines that the Space Shuttle used. Not as in the exact model, but literally refurbished RS-25 engines that already completed successful flights on the Space Shuttle.