$265 for a hammer?

[Acer]

I'm looking for a study that supports "A titanium hammer transfers 97% of your energy from swinging the hammer to the nail, while a steel hammer transfers only 70% of your energy to the nail." And, that if is true, it leads to better real-world performance. The googles just lead me through a web of forum threads, handyman blog posts and marketing materials all referring to each other.