ABCPool is all about predictably high mining rewards. The stats are focussed on helping (potential) miners manage their rigs and optimize their rewards. ABCPool is a PPS pool, meaning our miners always get the same high amount for every share submitted, no matter when (or even if) any blocks are found. Current or historical round information, while interesting, has no impact on earnings. There are also some practical barriers to providing round info, because we offload part of pool risk to third parties to be able to offer you such a competitive rate.
Could you have found a more convoluted way of saying "we hop a whole lot of other pools, so don't really generate blocks identifiable as our own"?
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Being a form of PPS means that counting your shares that they determine to be valid and keeping track of difficulty changes is all they need to do accurately to pay you correctly.
If you need that extra information ... then switch to ... almost any non-proxy bitcoin pool around