Anakin says, “You’re shorter than I expected – why is that?”
It is clear that both anakin and grievous were using insults to try and gain the upper hand in their argument. Anakin insulted Grievous height while Grievous insulted Anakins age. This shows that both characters were willing to use any means necessary to gain the advantage in their dispute. It is a reminder that even in the heat of the moment, it is important to remain respectful and not resort to insults.
Overall, it was a pleasant surprise to meet you, even though you were shorter than I expected. It was great to finally put a face to the name and I look forward to getting to know you better in the future.