You know what would have been really cool? If Soundwave used Ratchet's EXACT QUOTE, that was said to him back when he was captured, when Megatron talked about getting Ratchet's 'help'. It would have made the whole scene much more intense.
Ratchet: "What do you want from me?"
Megatron: "Your assistance, actually. To help complete a little 'science project'."
Ratchet: "I will never cooperate."
Soundwave: "I would strongly suggest opening him up, so we can have a first hand look at the information recorded on his drives!"