The curious case of Tony Ejimson: The protection of Family Unity under EU and ECHR law

The curious case of Tony Ejimson: The protection of Family Unity under EU and ECHR law

Had Tony Ejimson's claim for a residence right to stay with his daughter been adjudicated by the CJEU, not the ECHR, the case would have ended differently. This begs the question, why does EU law treat the unity of multi-national families more favourably?