Yes, the modified Bitcoin transaction performs exactly the same transfer between the same addresses. There is no double-spend as far as the Bitcoin system is concerned since only one of the transactions will get confirmed by miners.
Linguistic arguments are kind of pointless, but it's still an attack even if they are just trying to disrupt the system and not steal anything. e.g. a denial-of-service attack.
Linguistic arguments are kind of pointless, but it's still an attack even if they are just trying to disrupt the system and not steal anything. e.g. a denial-of-service attack.
Various definitions of "attack" are at http://en.wikipedia.org/wiki/Attack_(computing)