Fans have been especially excited for Scraplet being our first official figure of the biggest natural threat to Transformers life since cosmic rust and gold plastic syndrome. Chuck points out, and rightfully so, that Scraplet is probably the only Scout class figure many fans will ever buy and they'll likely be buying multiples. While it's a very simple figure with no articulation worth mentioning it does look good in both modes and has an effective gimmick that can be used in either mode.
As for Energon Axe Attack Optimus Prime it appears to be either a new mold or an extensive retool of the previous Ion Burst Optimus Prime figure. While the bot mode is a little more colorful this time around with more detailed paint apps and an open face head sculpt, the alt mode isn't very appealing to adult collectors and the new battle gimmick is very awkward.
Chuck also points out that while these haven't turned up at most retailers yet, both online and off, you can get Scraplet and Energon Axe Attack Optimus Prime on the still running Hasbro Toy Shop eBay store right now!