Realistically all those games came down to a coin toss,
Both sides played well and both sides had lapses of concentration
Newcastle were the luckiest - I think without the cards they'd have lost as ospreys looked better for the majority, but you can only play what's in front of you
The way you're talking the pro 14 sides should've been expected to win all these games comfortably because you're so shocked that they didn't. I don't get why, because the English sides are in good form and have some quality players