Ann: Further conditional increase to Hancock Offer, page-3

So let me se if I understand this correctly

The offer has increased to 4.6c if they get 87%, plus an additional 0.4c for those that have already accepted prior to any changes in the offer? So if I accept now, I only will get 4.6c if they reach 87% but not the additional 0.4c, that only goes to those that have already accepted? How does that entice me to accept the offer? Is that legal? Or am I misunderstanding this?