I don't think you can answer this question based on the information you provide as the content of the KE Foundation exams and Bond papers are completely different.
I am aware of some children who have failed Bishop Vesey (NFER based exam) but passed the KE Foundation and vice versa.
If you recall I think I did provide some relevant information in a previous post:-
Vocabulary is key in the KE Exams; how does he do in with Vocab based synonyms and Comprehsion papers?
Have you tried a variety of papers other than Bond? You need to ensure that he tries a variety of different papers, including some of the Cloze test questions I referenced in my previous post.
Ignore 95%-100% claims by other parents. This is a myth. The actual pass marks for KE Exam are somewhere between 50% to 70%, but it is tough and they are under time time pressure.