Yup, good balance of powers and wits in this war.
Rider clearly is awesome. I was a little troubled at first when he said no other servant came to the show, when he was like everyone else just watching and waiting from a distance.
But then he has his grandiose entrance right in the middle of the battlefield.
I almost had tears of joy.
Regarding lancer, the second spear trap was obvious from the moment he dropped it. A bit of a letdown.
I was also a little astonished at how Assassin was so easy to spot when he did not feel Kiritsugu and his teammate.
But since we know Kiritsugu is highly skilled.
It could also be that modern weapons are somewhat immune to some magic. Traditional opposition between magic/science.
Or it just could be that magicians do not care/know about infrared detectors, thus do not conceal that... or do not even have spells for that. Last idea could be those weapons are also magic infused, so have a combined advantage of science and magic.
However all of that works for Kiritsugu, I wonder how his teammate can also benefit from all of this, unless Kiritsugu is so strong he has enough power to perfectly conceal her too.
Regarding Saber, she is too perfectly the same as she'll be in the next war. Acting quick without really anticipating a trick/trap and taking high damage quite early into a fight/war.