Pulse pressure appears to best answer your question. Thus the PP (difference b/w systolic and diastolic pressure) in the latter BP is 30mmHg representing a more favorable physiologic state that translates into favorable theoretical, epidemiologic and experimental evidence.

I think that both levels of bood pressure are good and probably the litle diference in the PP stress not increase the risk of cardiovascular diseases.

There are 2 variables : 1) pulse pressure (50 vs 30) and mean atrierial pressure (86.7 vs 90). About the correlation between pulse pressue and mean aterial pressure with CV risk

I will quote from : Hypertension. 2000; 36: 801-807

" average SBP, DBP, and MAP strongly predict CVD among younger men, whereas either average SBP or PP predicts CVD among older men. "

Be careful about how the question is framed. As arteries get stiffer with age or general atherosclerosis, the pulse pressure increases, both due to lack of arterial compliance directly and due to the "stacking" of the reflection wave due to higher pulse velocity. So you'd rather have a low pulse pressure than a high one (assuming there is no concomitant illness such as sepsis or cirrhosis leading to systemic vasodilatation), but association does not mean causation. That said, higher pulse pressures may lead to greater shear stress and so I'd rather have a narrow one regardless.