Consider playing a bit more cautiously around Kennen when you have a Mark of the Storm debuff. If he hits you with 3 Marks of the Storm, you will get stunned.
Kennen is flimsy by nature - turn and attack him if he gets careless with Lightning Rush.
The stat comparisons shown on this page highlight several significant Vex versus Kennen counter statistics that may help us distinguish the distinctions between these two champs. As an example, Vex’s KDA ratio ([kills + assists] / deaths) of NaN is better than Kennen’s KDA ratio of NaN, indicating that Vex may be more central to their team's team fighting capacity than Kennen..
Vex typically has a similar longest kill spree as their foe does. On average, they takes a similar amount of damage to Kennen. This typically indicates differing health capacities, but it can also hint that the one champion has less agility and thus is unable to escape additional damage when poked or engaged.
Both League champs are great champions. Both champs have their pros and cons. In League's current meta, Vex usually wins when playing against Kennen, with a 52.9% win rate. Therefore, Vex makes a good counter to Kennen.
While Vex does have a higher winrate compared to Kennen, when on opposite teams, Vex also has a much lower difficulty level that makes them a less challenging character to develop with. You don't need to be too worried when picking Vex into Kennen.
Moreover, Vex has some amount of CC and other utility, a similar amount to Kennen. This makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not a single best champion overall in League of Legends, in Vex vs Kennen matchups, Vex is the better champ with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your allies during teamfights.
Vex is a good counter to Kennen. Make sure you focus your strategy on increasing your gold income and taking out objectives. If you can do that, you should do very well as Vex against Kennen.
To learn all of the intricacies of Vex in order to counter Kennen during both the laning and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and suggestions shown here, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Vex on average gets a similar amount of CS relative to Kennen. Champions who typically don't acquire much CS usualy don't need much CS to be effective, such as sup champs. They are capable of scaling well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have a lot of items to be effective. In either case, try to exceed the values displayed on this page to do well.
The top items to prioritize in your Vex versus Kennen build include Rabadon's Deathcap, Stormsurge, and Luden's Companion. When Vex used at least these three items in their build, they performed a lot better against Kennen than with most other typical item sets. In fact, Vex had an average winrate of 52.9% when playing against Kennen with these items in their kit.
To have the highest probability of crushing Kennen as Vex, Vex players should use the Electrocute, Taste of Blood, Eyeball Collection, Ultimate Hunter, Manaflow Band, and Transcendence runes from the Domination and Sorcery rune sets. Of all the runes players picked for Vex vs Kennen counter picks, this combo of runes yielded the best win rate. In fact, these runes averaged a 52.9% winrate overall.
By default, tips, statistics, and builds on how to beat Kennen as Vex are given for every ranked division. If you want to narrow the statistics and builds to an individual rank, you can use the selection menu located earlier on the page.