I have to chuckle at that slide, I remember seeing a similar one years ago with the EVA and look how that turned out.
Several things the slide misses;
If VNX to VNX2 is forklift upgrade then what is going to 3par? (If you're migrating unified to unified then this has been made extremely easy now between VNX models).
3par dedup (if you can really call it that) works at a 16kb granular level, VNX2 works at 8kb. 3par main dedup is also file only (comparable to Gen 1 VNX), 3par's so called block is just deduping zero blocks not actual data!
How does a free backup assessment compare to a dedup guarantee? (BTW EMC also offer free backup assessments!!).